What is the best type of cement used in plain GRC components? What's the best filler? How dose glass fiber be controlled?
Cement: Cement usually used in GRC, mainly consisting of fast hard sulphoaluminate cement, low alkalinity sulphoaluminate cement, ordinary portland cement, and white Portland cement.Fiber: fibers used in GRC materials must be alkali resistant glass fibers, including alkali resistant fiberglass, roving, alkali resistant fiberglass, short cut, alkali resistant fiberglass mesh. Europe and the United States require GRC in the use of glass fiber zirconia content of not less than 16.5%, China requires the use of ordinary portland cement, zirconia content of not less than 16.5%.
GRC material composition: the basic components of GRC are cement, sand, fiber and water. In addition, polymers, additives and other materials are used to improve the performance of the later stage.
Polymer: usually the added polymer is acrylic emulsion, that is acrylate copolymer emulsion.Admixture: usually selectively adding superplasticizer, superplasticizer, retarder, early strength agent, antifreeze, anti rust agent and other additives containing products: when the steel reinforcement or steel embedded parts, do not use calcium chloride based additives.Other materials: selectively adding some pozzolanic active materials to improve the overall properties of GRC products, such as strength, impermeability, durability, etc.. For more details.
